庫水升降對漩口滑坡穩(wěn)定性的影響規(guī)律
[Abstract]:The rise and fall of reservoir water level is the main factor to aggravate the landslide risk in the reservoir area. Taking the Waikou landslide of Zipingpu Hydropower Station in southwest China as an example, with the help of Geo-Studio numerical simulation software, the influence of reservoir water level change on the seepage field and stability of landslide is analyzed. Combined with monitoring data, the development trend of landslide stability affected by reservoir water level is verified. The results show that the saturated-unsaturated seepage parameters determined by the sliding particle gradation curve and the modified Kov 謾 cs model can well simulate the variation of landslide seepage field. At the stage of water level rise, the peak value of stability coefficient increases with the increase of water level rising rate. When the reservoir water level drops, the stability coefficient decreases to the lowest value first and then increases gradually, and the lowest value time is the same as the time of the reservoir water level lowest point. The faster the water level drops, the worse the landslide stability coefficient is. The rise and fall of reservoir water level mainly affect the stability of the front edge of landslide.
【作者單位】: 中交第二公路勘察設(shè)計(jì)研究院有限公司;中國地質(zhì)科學(xué)院地質(zhì)力學(xué)研究所;
【基金】:國家自然科學(xué)基金項(xiàng)目(41672359) 中國地質(zhì)調(diào)查局工作項(xiàng)目(DD20179282,DD20160272) 院所長基金項(xiàng)目(DZLXJK201611)
【分類號】:TV223;TV738
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